Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL089186 |
Evidence of hydrological intensification and regime change from northern Alaskan watershed runoff | |
C. D. Arp; M. S. Whitman; R. Kemnitz; S. L. Stuefer | |
2020-08-21 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2020 |
英文摘要 | Snowmelt‐dominated runoff regimes have defined northern Alaskan rivers. Discharge records from three watersheds within the National Petroleum Reserve in Alaska (NPR‐A) span 19 years and capture three notable periods of changing runoff. In the first, 2001‐2008, mean annual runoff (MAR) averaged 90 mm, characterized by sharp snowmelt runoff and summer drought. Over the next seven years, larger MAR averaged 120 mm driven by high and early snowmelt runoff. The most recent four years, 2016‐2019, had even higher MAR of 163 mm with high and sustained late summer flows. Hydrograph analysis suggests a shift toward rainfall‐dominated runoff in the most recent period compared to snowmelt‐dominated hydrographs in the previous two. Declining sea ice appears closely linked to increasing late summer precipitation and a shift toward rainfall runoff. Future development in the NPR‐A will require continued hydrological monitoring and planning to mitigate flood and erosion hazards, permafrost degradation, and ecosystem impairment. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/291133 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | C. D. Arp,M. S. Whitman,R. Kemnitz,et al. Evidence of hydrological intensification and regime change from northern Alaskan watershed runoff[J]. Geophysical Research Letters,2020. |
APA | C. D. Arp,M. S. Whitman,R. Kemnitz,&S. L. Stuefer.(2020).Evidence of hydrological intensification and regime change from northern Alaskan watershed runoff.Geophysical Research Letters. |
MLA | C. D. Arp,et al."Evidence of hydrological intensification and regime change from northern Alaskan watershed runoff".Geophysical Research Letters (2020). |
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